Effectiveness of token-rewards for chimpanzees
By: by John B. Wolfe.
Series: Comparative psychology monographs.; v. 12, serial no. 60
Publisher: Johns Hopkins Press
Published: 1936
Place of publication: Baltimore
Language: eng
Number of pages: 72
Subjects: Chimpanzees.; Animal intelligence.
Notes: Cover title.
Reprinted by Kraus Reprint Co., New York, 1970.
Serial nos. 51-60 in vol. 11-12 with binder's title:  Comparative psychology monographs, 1934-36.